Genuine OEM Kia Rear Seat Headrest Guide, part number 89485G5000DDK. This guide is installed in the top of the rear seat backrest, providing a secure and smooth channel for the headrest posts to slide during adjustment. It helps to prevent rattling and ensures the headrest remains stable in its desired position. As a genuine OEM part, it guarantees precise dimensions and durable material, essential for the proper function and longevity of the seat's safety features.